Wen Zhong Shen

Shanghai Optech Science & Technology Co., Ltd. engages in the business of researching, developing, designing, producing, and selling photovoltaic detection schemes. The firm also offers photovoltaic testing equipment, visual defect inspection systems, and related technical services and accessories. The company was founded on December 2, 1999 and is headquartered in Shanghai, China.

Changzhou Betterial Film Technologies Co., Ltd. principally engages in the research, development, production, and sale of functional films. Its key products include photovoltaic film, biaxially-oriented polyethylene terephthalate (BoPET) film, polyvinyl chloride (PVC) film, polycarbonate (PC) film, adhesives, and coating materials, which are used in the industries of photovoltaic modules, consumer electronics, and home decoration. The company was founded on September 25, 2007 and is headquartered in Changzhou, China.